Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 374th h3ra993huskp 🇯🇵 923 127 17 Sep 2023 374th tigerdan2 🇩🇪 923 127 19 Dec 2023 378th uiamn 922 58 6 Sep 2022 378th 5quiwyrm 922 58 29 Sep 2022 378th alasdair-greenland 922 58 13 Jan 2023 381st btnlq 922 59 6 Nov 2022 382nd Lydxn 🇨🇦 922 90 6 May 2022 383rd Lydxn 🇨🇦 922 108 6 May 2022 383rd JayXon 🇺🇸 922 108 9 May 2022 385th nwellnhof 🇩🇪 921 51 4 May 2022 385th primo-ppcg 🇹🇭 921 51 6 May 2022 385th radarek 🇵🇱 921 51 8 May 2022 385th janlelis 921 51 10 May 2022 385th Natanaelel 🇸🇪 921 51 2 Jun 2022 390th Herbert00709 🇵🇱 921 92 17 Nov 2023 390th 4QT0R 921 92 23 Nov 2023 390th ovs-code 🇩🇪 921 92 3 Jun 2024 393rd MichalMarsalek 🇨🇿 920 71 5 May 2022 393rd Lydxn 🇨🇦 920 71 7 May 2022 393rd GrayJoKing 🇦🇺 920 71 8 May 2022 393rd JayXon 🇺🇸 920 71 8 May 2022 393rd Steffan153 🇫🇮 920 71 9 Mar 2023 393rd Shanethegamer 🇺🇸 920 71 15 May 2023 393rd MeWhenI 🇻🇦 920 71 8 Aug 2023 393rd sean-niemann 🇺🇸 920 71 9 Jan 2025 401st xnor-gate 919 63 20 Jan 2025 402nd Steffan153 🇫🇮 919 76 15 May 2023 402nd primo-ppcg 🇹🇭 919 76 15 May 2023 402nd Lydxn 🇨🇦 919 76 22 May 2023 402nd GrayJoKing 🇦🇺 919 76 24 Aug 2023 406th primo-ppcg 🇹🇭 917 61 6 May 2022 406th sisyphus-ppcg 🇦🇺 917 61 14 Jul 2022 408th Lydxn 🇨🇦 916 70 7 May 2022 408th JayXon 🇺🇸 916 70 7 May 2022 410th arctouch-cristiannevianna 916 85 3 Apr 2023 410th tomtheisen 🇺🇸 916 85 10 Apr 2025 412th Steffan153 🇫🇮 915 71 14 Oct 2022 412th Shanethegamer 🇺🇸 915 71 15 Oct 2022 412th stefangimmillaro 915 71 16 Oct 2022 412th MeWhenI 🇻🇦 915 71 16 Oct 2022 412th Steffan153 🇫🇮 915 71 10 Dec 2022 412th synt7x 915 71 4 days ago 418th annaproxy 915 79 24 Aug 2022 418th GrayJoKing 🇦🇺 915 79 28 Aug 2022 418th IanUtley 915 79 3 Nov 2023 418th Kacarott 🇦🇺 915 79 13 Jun 2024 422nd Natanaelel 🇸🇪 914 57 17 Jan 2024 422nd Kacarott 🇦🇺 914 57 10 Sep 2024 424th Shanethegamer 🇺🇸 914 61 9 Oct 2023 424th edsrzf 🇳🇿 914 61 7 days ago 426th JayXon 🇺🇸 914 79 5 Apr 2023 426th Lydxn 🇨🇦 914 79 9 Apr 2023 428th Shanethegamer 🇺🇸 914 87 15 May 2023 428th JayXon 🇺🇸 914 87 15 May 2023 428th Steffan153 🇫🇮 914 87 16 May 2023 428th Lydxn 🇨🇦 914 87 16 May 2023 428th GrayJoKing 🇦🇺 914 87 11 Aug 2023 428th sean-niemann 🇺🇸 914 87 11 Jul 2024 434th sean-niemann 🇺🇸 914 109 25 May 2024 434th CaedenHarper 🇨🇦 914 109 28 Jan 2025 436th pardouin 🇫🇷 913 72 21 May 2025 437th AdamHe17 913 73 31 May 2022 437th AliceFord 913 73 2 Jun 2022 437th Natanaelel 🇸🇪 913 73 16 Jun 2022 437th btjones0 913 73 21 Jun 2022 437th marcin7Cd 913 73 27 Jun 2022 437th tri1212 🇻🇳 913 73 18 Jul 2022 437th vhoulbreque 🇫🇷 913 73 18 Aug 2022 437th KatieLG 🇬🇧 913 73 29 Aug 2022 437th tkr-sh 🇫🇷 913 73 8 Sep 2022 437th jroscoe5 913 73 15 Sep 2022 437th fredrik-bakke 🇳🇴 913 73 18 Sep 2022 437th firegene 🇮🇪 913 73 27 Sep 2022 437th OhmNomNom 913 73 7 Oct 2022 437th 0-4849 913 73 1 Nov 2022 Prev 376–450 of 3,184 Next